InstanceUtil.java

/*
 * Copyright (c) 1986-2015, Serkan OZAL, All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package tr.com.serkanozal.jillegal.agent.util;

/**
 * Utility class for some common instance creation related operations.
 * 
 * @author Serkan OZAL
 */
public final class InstanceUtil {   
	
	private InstanceUtil() {
		
	}
	
	/**
     * Tries to create an instance of class with given <code>className</code>.
     * 
     * @param className name of the class whose instance will be created
     * @return the created instance
     * @throws ClassNotFoundException   if related class couldn't be found
     * @throws InstantiationException   if instance of related class couldn't be created
     * @throws IllegalAccessException   if access to class or field failed due to illegal access
     */
	@SuppressWarnings("unchecked")
    public static <T> T createInstance(String className) 
	        throws ClassNotFoundException, InstantiationException, IllegalAccessException {
	    Class<T> clazz = (Class<T>) ClassLoaderUtil.loadClass(className);
	    if (clazz == null) {
	        throw new ClassNotFoundException(className);
	    }
	    return clazz.newInstance();
	}
	
}